/Engine/Source/Editor/LevelEditor/Public/LevelEditorOutlinerSettings.h
Get theFFilterCategoryattached to the given category name. Use this to add filters to the built in categories.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FFilterCategory](API\Developer\ToolWidgets\Filters\FFilterCategory) > GetFilterCategory ( const [FName](API\Runtime\Core\UObject\FName) & CategoryName )